Pump



WITNESSES;

Jan. 20, 1925.

L. R. KIEHL 1523380 I PUMP Filed Jan. '16. 1924 Ledie R. lQefi/Z I v INVENTOR ATTORNEY Patented Jan. 20, 1925.-

; UNITE ,IVLESVLIE n. KI iiirL, or RATON, 1\IEW iyisxioo.

PUMIP.

Application filed January 16, 1924. Serial Ho. 686,596.

To all whom it may concern:

Be it known that LLnsnrn R. KIEHL, a citizen of-the'i'United States, residing at 'Raton, in the county ofColfax and State ofNew Mexico, have invented new and useme January 13, 1920/ I up Like theabove numbered patent, the present invention' aiins to provide a pump by means of which water in a pro-heated or partially heated state may be introduced into a steam boiler, so that the temperature in the latter will not be appreciably reduced.

In addition, the present invention aims to provide means included in the pump to reduce leakage past the pump piston and to overcome and release leakage at each end of the piston stroke.

With the above and other objects in view, the invention further includes the following novel features and details of construction, to be hereinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claims.

In the drawing the figure shown represents a sectional view of a pump constructed in accordance with the invention and illustrating its position in use.

Referring to the drawing in detail wherein like characters of reference denote corresponding parts, the pump as shown includes a cylinder 10 which is open. at one end and provided adjacent said end with a steam inlet port or ports 11. This end of the cylinder is arranged within a boiler, a portion of which is indicated at 12.

The cylinder 10 further includes .a water inlet port or ports 13, while surrounding the cylinder and communicating with the latter t rough the port 13 is a tank or reservoir 14- so that water may be supplied to the interior of the pump cylinder. It is of course obvious that other suitable means may be provided for this purpose.

Operating within the cylinder 10 is a piston which includes spaced heads 15 and 16, both of which are provided with suitable packing rings 17. The head 15 is of an appreciable length and at each end of this head there is provided annular grooves or chambers 18. These grooves or chambers may be formed in any suitable manner, such of "patent 'numbered 1,328,165, granted to as by providing auxiliary head sections 19 spaced fromthe main portion or body of the head and secured to the piston rod 21 by any suitable means The head 16 is spaced from the head 15 and this space provides a water and steam chamber where- 'in water and steam are mixed to reduce the temperature of the former before the water is transferred from the tank 14 to the boiler. The head 16 like the head 15 is provided with an annular groove or chamber 22 which .is formed by spacing an auxiliary head 23 from a main-portionof the head, the rod 21 extending through and connecting the head 16 and its auxiliary portion 23.

The rod 21 extends through a suitable packing gland 2 1 provided at the outer closed end of the cylinder 10 and this end of the cylinder is in communication with the boiler through a steam pipe 25 which is controlled by a valve 26. Steam pressure upon opposite sides of the pistons may thus be equalized.

By means of the construction shown and described, leakage past the piston heads will be reduced during the piston stroke and re leased at each end of the stroke, while leakage at each end of the stroke will be overcome. The release of leakage is effected through the register of the grooves or chambers 18 and 22 with the ports 27 and 28, as the water space between the heads 15 and 16 will register with the release port 28 before registering with the water inlet port 13, the said port 28 acting to release steam from the pump both on its working and its return stroke.

As shown in the drawings, the piston heads are in position to deliver water to the boiler and when said heads are moved outward or to the left of the figure, the space between the heads 15 and 16 will register with the release port 28 and deliver steam to the tank or reservoir 14, continued movement bringing the groove 22 into register with said port for the escape of possible leakage, the space between said heads 15 and 16 then moving into register with the port 13, so that the cylinder will receive water from the tank. On the return stroke this water is delivered to the boiler 12 through port 11, leakage escaping from the groove 18 through the ports 27 and 28.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is here .each 'end of the stroke.

2. The combination with a steam boiler and a source of water supply, of a pump arranged to transfer water from the source of supply to the boiler, a reciprocatory pistion included in said pump, a collecting groove for said piston and spaced release ports in said pump, whereby leakage during' the pump stroke will be reduced and said leakage released at the end of the stroke.

3. The combination with a steam boiler, of a pump including a cylinder having a port at one end for communication with the boiler, a water reservoir, said pump cylinder also having a water inlet port spaced from the first mentioned port for communication with the reservoir, said cylinder being further provided with spaced release ports upon opposite sides of the water inlet port, spaced piston heads operating within the cylinder and providing a water and steam mixing chamber between said heads, and said heads having collecting grooves therein for register with the release ports to release leakage at each end of the piston stroke.

In testimony whereof I afiix my signature.

LESLIE R. KIEHL. 

